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https://issues.apache.org/jira/browse/BEAM-13624?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17513028#comment-17513028
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Beam JIRA Bot commented on BEAM-13624:
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This issue was marked "stale-assigned" and has not received a public comment in
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can assign it to yourself again. Please also give an update about the status of
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> pipeline_fragment incorrectly prunes producer transform
> -------------------------------------------------------
>
> Key: BEAM-13624
> URL: https://issues.apache.org/jira/browse/BEAM-13624
> Project: Beam
> Issue Type: Bug
> Components: sdk-py-core
> Reporter: Brian Hulette
> Priority: P2
>
> Unfortunately I haven't been able to diagnose the exact issue here or come up
> with a minimal repro. I just have some code to reproduce in
> https://github.com/apache/beam/pull/16445.
> That PR adds support for value_count(bins) in the DataFrame API, which for
> some reason is interacting poorly with pipeline pruning in interactive Beam
> (rehydrating the pipeline raises an error about a PCollection's producer
> missing). The PR also adds a test to transform_test.py that replicate the
> issue, as well as a temporary mitigation in pipeline_fragment.py. I think the
> mitigation is effectively disabling pipeline pruning, so it likely shouldn't
> be merged.
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